Now, Ranbir will be seen lending his voice to a song titled 'Love Ki Ghanti', composed by Lalit-Pandit and sung by Sujeet Shetty, Amitosh Nagpal and the actor. The song is in the form of a musical conversation and when this concept was decided, Abhinav Kashyap was very keen on having Ranbir to sing the song.

"When this concept was formulated, there were no second thoughts about Ranbir singing this song as it is almost in verse form and any other sound wouldn't have worked.

It was the most appropriate thing to do and we had a lot of fun while doing this," Kashyap said in a statement here. 'Love ki Ghanti' is Ranbir's introduction song in the film where audience will be introduced to the wit and attitude of his character. The film also stars Ranbir's parents - Rishi and Neetu Kapoor and Pallavi Sharda. It releases on October 2.